greek poleis

[PMBardunias]

I expect that Hellenistic historians would have a problem with that! Poleis survived and remained important at least into the Roman conquest and arguably well beyond that, from what I've read.

We see the polis as functional political and military unit being eroded by the rise of leagues- the Peloponnesean, Delian, Boeotian, and many others.

In hellenistic times most of the old Poleis within Greece are joined into leagues such as the powerful Achean and Aetolian. That is not to say that the old polis dissapeared, only that they as an independant force were largely irrelevent. The exceptions were Sparta, who always was something of a league unto itself or perhaps a mini-empire, and Athens whose naval and commercial power made it less centralized and insular than the average polis.